ci: add ci config for gotip

Signed-off-by: Mark Sagi-Kazar <[email protected]>

Author: sagikazarmark

.github/workflows/tip.yaml

@@ -0,0 +1,28 @@
+name: Tip
+
+on:
+  push:
+    branches:
+      - generics
+  pull_request:
+
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Set up gotip
+        working-directory: ${{ github.workspace }}
+        run: |
+          git clone https://go.googlesource.com/go $HOME/gotip
+          cd $HOME/gotip/src
+          ./make.bash
+          echo "GOROOT=$HOME/gotip" >> $GITHUB_ENV
+          echo "PATH=$HOME/gotip/bin:$PATH" >> $GITHUB_ENV
+
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Run tests
+        run: go test -v ./endpoint/ ./transport/http2/